Improvement in sewing-machines



2 Sheets-Sheet 1.

A. C. HERRON. SEWING MACHINE.

Patented Aug. 4, 1857.

2'Sh'eets'Shee't 2. A. C. HERRON. SEWING MACHINE.

No. 17,930. Patented Aug. 4, 1857.

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UNITED STATES PATENT OFFICE.

ABIA'L o. HERRON, or REMSEN, new YORK.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 17.930, dated August 4,1857.

describe their construction and operation, re-- ferring to the drawings,in which thesame letters indicate like parts in each of the figures.Figure 1 is an elevation of one side. Fig. 2

is an elevation of one end. Fig. 3 is a plan of the bottom of themachine.

My invention consists in the arrangement of-a hook or looper, of theform hereinafter described, having a reciprocating movement through anarc of about a quarter of a'circle to catch the loop formed by theneedle and :carry it toward the cloth, the hook or looper operating incombination with the needle and an elastic roll, which roll, revolves on'its axis and presses the needle into the proper relative position withthe hook, and also aids in opening the loop for the reception of thelooper.

In the accompanying drawings, Ais the base of the machine, having thestand B fastened to it, which stand B is provided with an arm, 0,extending out over the base, as shown in the drawings, Fig. 1.

The shaft 1) is fitted to turn in proper perforations in the baseA,lright under the stand B, which is made hollow to accommodate theparts working in it, as will be hereinafter described.

The shaft D is provided with a crank-wheel, E, and pin F, to turn it andoperate the machine by hand; or a band may be applied to the wheel E,so' as to operate it by other power.

The cam G is fastened to the shaft 1), and provided with a groove, H, tovibrate the lever I on a pin in the top of the stand 13. One arm of thislever projects down into the groove H, and the other projects over thearm C, to operate. the transverse rod J which is connected to it, asshown in Fig. 1. The arm K of the lever I'has the spool-stud L in it,which is provided-with two conical tubes, M M, to accommodate bobbinswith holes of different sizes, the lower tube resting on the spring N,and the friction of the spring may be graduated to suit the thread byturning the nuts 0 and M on the stud above the upper tube, Z. The bobbinP supplies the thread, which runs through the guideQ and a hole in thelever I, and through the guide R in the end of the 'arm 0, and throughthe eye of the needle S, fastened in the end of the transverse rod J,which traverses in the end of the arm C.

The rock-shaft T turns in the projections U U from the stand B and arm0, and is operated by the arm V, moved by the cam WV'on the shaft D,being pressed against the cam by the spring X, fastened to the base A,and

shownin Fig. 3. v

The tube Y of the feeding apparatus is fastened to the end of-therock-shaft T, and vibrated by it, carrying the rod a and feeding shoe orlever 1),: hinged to its lower end and pressed against the cloth by thespring 0, fastened to the rod a. The shoe 1) is made in the form shownin the drawings, its sole or bottom being fluted, so as to push thecloth, when it is moved in the direction of the arrow, and so as, toslip on the cloth when moved in the opposite direction. The motion ofthis shoe may he graduated by turning the screw d in the stand B, whichgraduates the vibration of the lever or arm V on the opposite end of therockshaft. This shoe may be raised to put the cloth under it by pressingits upper" end towards the rod a, which rod is prevented from turning bythe point of the screw 6, which fits into a groove inthe rod a, and itis traversed in the tube by the nut f, fitted to the upper end of therod and into the end of the tube,

the screw 9 entering a score in the 'npt, so as y to hold it in the tubeand allow it to-turn.

The needles carries theth'read through the cloth and through a hole inthe base A, and as the needle is drawn back it formsa loop, which iscaught by the hook h, Fig. 3, under the base A, and held while theneedle is drawn up and put down again through the clot-hand through theloop on the hook, which is then swung out of the loop or swung back, sothat the loop slips off of the hook and is drawn out of the way by theneedle S, and when the needle begins to draw back it forms another loop,which is caught by the hook h as it swings forward, as before. The pointof the hook,when it is vibrated, describes the arc of a small circle,while its base i describes the arc of a larger one, and swings towardthe cloth as it catches the needle is operated by hand.

the loop in an opposite or partly opposite direction to that in whichthe cloth is moved, so as to hold the loop 'Very' near the cloth andmake it very short, so as to wear the thread but little, and draw ittight in the cloth to make a close seam, the loop being drawn fiat andwithout twist, so as to make a fiat stitch, pre cisely as the commonloop-stitch is madewhen The hook it is made in the form shown in thedrawings, Fig. 3, and is scored out or depressed alittle at j on eachedge where the point joins the base, and where the thread lies when thebase bf the hook is swung nearest the cloth. These scores insure thehook to carry the loop up and hold it nearly at right angles to theneedle, so as to insure the needle to pass through he loop witheertainty'when the machine is operated with a quick motion.

The hook it is fastened to the shaft k, which operates it and turns inthe stands Z Z, fastened to the base A, being provided with a segmentofteeth, which are acted upon by the rack m, which is traversed by the camn and spring 1), which presses the friction-roller q in the end of therack against the cam. The rack m traverses in the stands 7 1', fastenedto the base A, and the cam 'n is fastened to the cam G and turns withit. The spring is fastened to the base A. I

The shaft 7: may be turned by an arm hinged to the rack or rod m, or bymaking a spiral groove in the shaft and vibrating a lever with one endin the groove, should either of those ways he preferred. I

The roller t, I prefer made of india-rubber;

but it may be made of such other material as will answer the purpose.

fastened to the base A by a screw through a slot in the stand 11., soarranged that the stand may be moved to adjust such partof the roller tothe needle as may be desired. The roller 1 should have its' axis at aright angle to the shaft k, and should be placed so as to hold theneedle in a proper relative position to the hook 72 and so as to pressthe thread against the needle, or into a groove in it, so as to pressthe thread through the eye and aid in throwing it from the needle on theside opposite to the roller, to facilitate the hook in catching the loopand make it more certain to do so, and insure it not to drop a stitch.

I believe I have described and represented my iniprovelnents so as toenable any person skilled in the art to make and use them. I will nowstate what I desire to secure by Letters Patent, to wit:

I do not claim a rotating hook which has a longitudinal or traversemotion in the direction of its axis in addition to its rotary motion,-but VVhat I do claim, and desire to secure by Letters Patent, is

The hook it and roll t, arranged and operating in combination with theneedle, in the manner substantially as described, for the purposespecified.

ABIAL O. HERRON. Witnesses:

J. DENNIS, Jr., JOHN S. HOLLINGSHEAD.

It has a metal bush ing, and turns freely on a pin in the stand u, i

